2012年3月2日優先在歐洲上市的Wii遊戲《瑪利歐派對9/馬力歐派對9/馬里奧聚會9》（マリオパーティ/Mario Party），由NDcube研發製作，任天堂發行販售。這是該系列首度中文化，跟之前一樣採類似大富翁模式進行，沿路會有許多小遊戲，最多可有四位玩家參與。

瑪利歐派對9是瑪利歐派對系列第9部，即是Wii平台的第2部，也是最後推出的瑪利歐遊戲。故事描述有一天晚上，瑪利歐跟朋友們在碧姬公主城堡外面觀看天空的星星，瑪利歐發現庫巴跟庫巴Jr.坐在太空船上利用吸塵功能的機器，不斷把小星星吸到填充器內，於是瑪利歐跟朋友們開始展開解救星星的行動。採用大富翁似的格子前進模式，原本眾玩家們分別前進改成全部玩家一起坐車進行的設定，遊戲總共收取80種遊戲，包括作披薩、逃出鬼屋、雪上摩托車競賽等。

The Wii game "Mario Party 9" (マリオパーティ/Mario Party), developed by NDcube and published by Nintendo, was first released in Europe on March 2, 2012. This installment marks the first time the series was localized in Mandarin. Like its predecessors, the game follows a Monopoly-like board game format, featuring various mini-games along the way. Up to four players can participate.

"Mario Party 9" is the ninth installment in the Mario Party series, the second on the Wii platform, and the last Mario game released for the Wii. The story begins one night when Mario and his friends are outside Princess Peach's castle, watching the stars. Mario notices Bowser and Bowser Jr. aboard a spaceship, using a vacuum-like machine to suck up the stars into a container. Consequently, Mario and his friends embark on a mission to rescue the stars. The game adopts a Monopoly-like grid movement system, but instead of each player moving separately, all players ride together in a vehicle. The game features a total of 80 mini-games, including activities like making pizzas, escaping from haunted houses, and snowmobile racing.